#!/usr/bin/node

const log = console.log;

let buf1 = new Buffer(256);
buf1[0] = 0;

log(`buf1 length:${buf1.length}`);
log(buf1);

for(let i=0;i<buf1.length;i++){
  buf1[i]=i;
}

log(buf1);

let buf2 = buf1.slice(250,256);
log('buf2:',buf2);

buf2.fill(0);
log(buf2);

log('Demo:',buf2.toJSON());

let arr = ['a',0xba,0xdf,0,255,0];
let buf3 = new Buffer(arr);
log(buf3);

let str = "hello world";
let buf4 = new Buffer(str);
log(buf4);

buf4.copy(buf3,0,0,buf4.length);
log(buf3);
